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Asked by abqb266 on 16 Jan 2017.
Question: the working mechanism of a flying plane and a helicopter is different from that of a living bird ,would scientist ever manage to make one which works like a living bird?
Asked by abqb266 on 16 Jan 2017.Question: the working mechanism of a flying plane and a helicopter is different from that of a living bird ,would scientist ever manage to make one which works like a living bird?